UnityでWebGLビルドが最後まで完了しない

前提・実現したいこと

Unityroomにゲームをアップロードするために、UnityでWebGLビルドをしたい

発生している問題・エラーメッセージ

ビルドをしても最後まできちんとできない。
Bulid and Runをクリックしそのあとしばらくビルドの作業が完了したと思って保存先のフォルダを確認しても何のファイルも追加されていません。また、ブラウザからゲームが開始されているわけでもありません。
UnityのConsoleには下のようなエラーメッセージが表示されます。
ちなみに、保存先のフォルダには日本語は含まれていません

CO
1UnityEditor.BuildPlayerWindow+BuildMethodException: 2 errors
2  at UnityEditor.BuildPlayerWindow+DefaultBuildMethods.BuildPlayer (UnityEditor.BuildPlayerOptions options) [0x002ca] in <fac3a832ec4249a49c4da1051848dde5>:0 
3  at UnityEditor.BuildPlayerWindow.CallBuildMethods (System.Boolean askForBuildLocation, UnityEditor.BuildOptions defaultBuildOptions) [0x00080] in <fac3a832ec4249a49c4da1051848dde5>:0 
4UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

CO
1Build completed with a result of 'Failed' in 17 seconds (16565 ms)
2UnityEngine.GUIUtility:ProcessEvent (int,intptr,bool&)

CO
1Exception: Failed running C:\Program Files\Unity\Hub\Editor\2020.2.0f1\Editor\Data\il2cpp/build/BeeSettings/offline/bee.exe --useprebuiltbuildprogram --no-colors
2
3stdout:
4[             ] Require frontend run.  tundra.dag no longer valid. FileSignature timestamp changed: il2cpp_settings.json
5[        0s] Executed build program. Created build graph with 3 nodes.
6[           0s] Freezing tundra.dag.json into .dag (.dag file didn't exist)
7*** Bee build failed (0.04 seconds), 0 items updated, 3 evaluated
8stderr:
9
10UnityEditorInternal.Runner.RunProgram (UnityEditor.Utils.Program p, System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser) (at <fac3a832ec4249a49c4da1051848dde5>:0)
11UnityEditorInternal.Runner.RunManagedProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, System.Action`1[T] setupStartInfo) (at <fac3a832ec4249a49c4da1051848dde5>:0)
12UnityEditorInternal.IL2CPPBuilder.RunIl2CppWithArguments (System.Collections.Generic.List`1[T] arguments, System.Action`1[T] setupStartInfo, System.String generatedCppOutputDirectory) (at <fac3a832ec4249a49c4da1051848dde5>:0)
13UnityEditorInternal.IL2CPPBuilder.ConvertPlayerDlltoCpp (UnityEditor.Il2Cpp.Il2CppBuildPipelineData data, System.String outputDirectory, System.Boolean platformSupportsManagedDebugging) (at <fac3a832ec4249a49c4da1051848dde5>:0)
14UnityEditorInternal.IL2CPPBuilder.Run () (at <fac3a832ec4249a49c4da1051848dde5>:0)
15UnityEditorInternal.IL2CPPUtils.RunIl2Cpp (System.String stagingAreaData, UnityEditorInternal.IIl2CppPlatformProvider platformProvider, System.Action`1[T] modifyOutputBeforeCompile, UnityEditor.RuntimeClassRegistry runtimeClassRegistry) (at <fac3a832ec4249a49c4da1051848dde5>:0)
16UnityEditor.WebGL.WebGlBuildPostprocessor.CompileBuild (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/bokken/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:365)
17UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at /Users/bokken/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:912)
18UnityEditor.Modules.DefaultBuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args, UnityEditor.BuildProperties& outProperties) (at <fac3a832ec4249a49c4da1051848dde5>:0)
19UnityEditor.PostprocessBuildPlayer.Postprocess (UnityEditor.BuildTargetGroup targetGroup, UnityEditor.BuildTarget target, System.String installPath, System.String companyName, System.String productName, System.Int32 width, System.Int32 height, UnityEditor.BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.Build.Reporting.BuildReport report) (at <fac3a832ec4249a49c4da1051848dde5>:0)
20UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr, Boolean&)
21